1. The union of diverse things into one body or form or group; the growing together of parts: The coalescence of all the members of the family at Christmas was fantastic because they hadn’t seen each other in such a long time.
2. The act or state of growing together, as with similar parts; the act of uniting by natural affinity or attraction; the state of being united; union; concretion: After their coalescence of getting married, Jack and Jill soon had children making their coalescence even more significant!